Five must-watch matches you can't miss this weekend.

The visit of Mourinho to Liverpool, on the second anniversary of Klopp at the helm of Liverpool, Jupp Heynckes' "redebut" with Bayern, a new test for Emery's PSG, Messi's visit to the new Wanda and the 'Derby della Madonnina' make up the five essential European football matches this weekend.

Liverpool vs Manchester United

Jürgen Klopp completes two years at the helm of Liverpool and, to celebrate, nothing better than receiving a visit from the victorious Manchester United of Jose Mourinho. The German coach, who upon arriving at the Premier League was dubbed the "Normal One" to distance himself from the "Special One" with which Mourinho began to impress the British press, has not yet managed to maintain the consistency needed to conquer the League. In fact, after 75 matches on the bench, he has worse numbers than Brendan Rodgers and Rafa Benitez.

'Mou', on the contrary, has found the key and his ManU is fighting with Guardiola's City for the top of the table. With Romelu Lukaku in great form, his concern is covering the absences of Fellaini, Carrick, and Pogba due to injury.

Bayern Munich vs Freiburg

Thirty years after taking charge of the Bavarian giant for the first time, Jupp Heynckes returns to the rescue of Bayern. A weak start, which has allowed Borussia Dortmund to outpace them by five points and the rebellion of the heavyweight players in the dressing room, led to Carlo Ancelotti's departure and the return of the coach who gave them their greatest triumph; the Triple Crown (League, Cup, and Champions League) in the 2012-2013 season.

The match in Dijon should not be a headache for Unai Emery. His team, the top goalscorer (27 goals), faces the most conceded (17). The rival coach, Olivier dall'Oglio, has described PSG as a "steamroller" and has admitted that his defenders feel "uneasy" about the arrival of Mbappé and Neymar. Because Emery has hinted that he will probably give rest to Cavani.

PSG vs Dijon

In addition to the accumulated fatigue of his internationals and the problems affecting the institution, with its Qatari owner accused of bribing FIFA to obtain the television rights of the World Cups, Emery will have to deal with Dijon's playing field. Usually, it's like a carpet, but after Montpellier drew a goalless draw with a terrible state of the field, Dijon announced on Twitter that they will release "a herd of bulls" in the stadium a few days before the match.

Barcelona vs Atletico Madrid

Freshly arrived from his exhibition in Quito, Leo Messi goes to the Wanda Metropolitano, the new magnificent stadium of Atletico Madrid, confident in maintaining his streak against the rojiblancos, against whom he has scored 27 goals, 22 of them in the league. Scoring at a rate of one goal per game since the start of 2017 (47 in 47 matches), Messi is the biggest threat to Diego Simeone's team's intentions of catching up with the leader.

Atletico relies on both the atmosphere created in their new venue ("like a Roman circus" according to Simeone) and the bad streak against 'Cholo' of the new Barcelona coach, Ernesto Valverde, who failed to defeat the Argentine in the league with his previous clubs.

Inter vs Milan

Inter and Milan have not finished in the top three of the standings since 2013 and have unsuccessfully accumulated coaches (six for Milan and five for Inter) during the last five years. And yet, the new edition of the Derby della Madonnina will break records, with a ticket revenue of 4.5 million euros never seen before in the Italian championship.

The clash between the two European football giants, with almost 110 years of history, offers the possibility of confirming Inter's recovery, who despite not playing well are in third place and keeping up with Napoli and Juventus, or halting Milan's decline, who without margin for error after suffering three defeats in seven matches, is obligated to seek a victory in order to not derail a project that was excited with a dozen of new signings that were intended to change the dynamics of recent years.